Our walmart prices come from the Nampa Idaho Walmarts, so they
shouldn't vary that much. It's something that everyone has to deal
with (the varing prices from store to store). If the prices are off
by more than a few cents, I would ask the manager why they are so
much higher, but make sure you are comparing exact items.
As for the shelf clear-ers, we all have to deal with that. I
suggest rain checks! They are an awesome way to preserve the price,
while the shelves are cleared. Walmart won't do them, but
Albertsons is great about them!
I hope this helps!